Hot-air-furnace attachment



Aug; 14. 1928. 1,680,907

E. R. NEVEL HOT AIR FURNACE ATTACHMENT Filed March 1928 2 Sheets-Sheet 1 Inventor E R. Nevel I y g wwfim Azzornqy Aug. 14. 1928. 1,680,907

E. R. NEVEL HOT AIR FURNACE ATTACHMENT Filed March 6, 1928 2 Sheets-Sheet 2 Inventor E. R.Nvel

Attornqy Patented Aug. 14, 1928.

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Application ma mm a, 1m. Serial in, 860,498.

The present invention relates to im rovements in hot air furnaces and has re erence more particularly to an attachment to the circular radiating drum for increasing the radiating surface thereof.

One of the important objects of the present invention is to provide a hot air furnace attachment that can be readily and easily installed without necessitating any material alterations of the parts of the furnace with which the present invention is associated.-

A still further object of the invention is to provide a hot air furnace attachment which is simple in construction, ineilrlpensive, strong and urable and further we adapted to the urpose for which it is designed.

Other jects and advantages of the invention will become apparent during the description when course of the following th e accompanying taken in connection wit drawings.

- In the accompanying drawings wherein like reference characters indicate corresponding parts throughout the several views:

Figure 1 is a horizontal sectional view through a hot air furnace showing a circular radiating drum in top plan and fragmentarily disclosing one form of the present invention;

Figure 2 is a side elevation of the circular radiating drum showing the manner in which the vertically disposed radiating fins are mociated with the drum.

Figure 3 is an enlarged sectional view showing the adjusting means for urging the radiating units against the circular radiatin if t d '1 wure isa ra ena eai rs ective t iew of the cir iilar strip or ba ii d that forms a part of this form of the invention.

Figure 5 is a detail elevational view of a pair of the U-shaped radiating fins showing the manner in which the same are arrange in spaced relation with respect to each other.

Figure 6 is a view similar to Figure 1 showing the type of radiating fins that are,

' 'the longitudinal slots 3 and 4 used in conjunction with a horseshoe shaped radiator of a hot air furnace.

Figure 7 is a detail perspective view of one ofthe radiating fins.

Figure 8 is a sectional view showing two adjacent fins and the band that extends through the openings formed in the fins for cooperation with the laterally disposed lugs struck out from the fins, and

Figure 9 is afragmentary detail ers ective view of one end portion of the amf In the drawings w th reference more particularly to Figures 1 to 5 inclusive, the numeral 1 designates the circular radiating drum of a hot air furnace A. A plurality of substantially U-shaped brackets designated by the numeral 2 ave the ends of the arms thereof secured to the-outer peripheral face of thedrum in any appropriate manner and these radially-disposed brackets are arranged at spaced points as more clearly shown in Figures 1 and 2.

The upper and lower arms of each U- shaped bracket are nally extending registering slots 3 and 4.

Extending circumferentially around the radiating drum 1 and through the spaced brackets 2 for disposition adjacent the crown portions of the bracket is the sectional relatively wide ring 5. An inwardly directed flange 6 is formed on the lower edge of each section for rest upon the lower arms of the respective brackets and extending upwardl from the inwardly directed flange 6 of eac sectionv of the se ental ring 5 are the spaced lugs 7 and t is feature is more clearly (llSClOSGd'iIl Figure 4 of the drawings.

Forming a salient part of this invention are the U-shaped heat radiating fins designated b the numeral 8, the same being preferabl ormed of copper, although any other suita le material may be employed.

These u-shaped fins or units 8 are disposed radial] around the drum 1 and the open ends 0 these fins are adapted for disposition a ainst the drum while the crown portions 0 the U-shaped fins engage with the inner faceof the respective sections of the segmental ring 5. The lower ed e of the crown rtion of each fin is'adapte to rest on the lnw-ardly directed flange 6 and as is shown very clearly in Figure 5, the lugs 7 tend to properly s ace the adjacent fins with respect to each 0 er so that vertical air passages formed with longitudiwill be provided between the fins as Well as between the arms of each fin. Furthermore, formed in the upper and lower arms of each bracket will permit the free circulation of the air u wardly therethrough as indicated by the a-r segmental ring. 5 whereby to urge the sections of the mug inwardly and to force the U-shaped heat radiatin units 8 inwardly against the drum 1 so t at the fins will be rigidly supported in a radial manner around the horseshoe shaped radiating drum.

A relatively narrow flat band 11 extends around the outer peripheral face of this drum 10 in spaced relation with respect thereto and the free ends of the band are disposed inwardly as at 12, and are secured to the res ective ends of the horse shoe shaped drum y any appropriate fastening means shownat 13 in Flgure 6.

A series of vertically disposed copper lates of rectangular shape and designated y the numeral 14 constitutes the heat radiating fins and each plate is formed with a slot or opening 15 adjacent the outer edge thereof. A lug 16 extends laterall from the inner edge of this slot 15 and eac lug is slightly curved so as to positively engage with the inner peripheral face of the horseshoe band 11 that extends through the registering slots 15 formed in the plate 14 and furthermore the lugs 16 provide a means for maintaining the plates in s aced relation with respect to each other an these plates will have their inner edges disposed against the outer peripheral face of the horse shoe shaped drum 10 as clearly disclosed in Figures 6 and 8 of the drawings.

It will thus be seen from the foregoing description that I have provided an attachment for a hot air furnace that will increase the radiatin surface of the radiator that is arranged a ove the fire pot of the furnace, and due to its simplicit the attachment can be readily and easily installed without necessitating any material alterations of the parts of the furnace with which said invention is associated.

While I have shown the preferred embodiment of my invention, it is to be understood that minor changes in the size, shape and arrangement of parts may be resorted to without departing from the spirit of the invention and the scope of the appended claims.

Having thus described the invention, what I claim as new is 1. The combination with the radiating drum of a hot air furnace, of a luralit of brackets carried by the drum an exten ing radially therefrom, a sectional rin encirclin the drum and confined within the brac ets adjacent the outer ends thereof, a series of radiating fins arranged radially with respect to the drum, the inner edges of the fins engaging the drum, and means for urging the ring inwardly against the outet edges of the fins to maintain the latter rigradially therefrom, a sectional rin enclrclin the drum and confined wit in the brac ets adjacent the outer ends thereof, a series of radi ing fins arranged radially with respect to t re drum, the inner edges of the fins engaging the drum, means for urging the ring inwardly ainst the outer ed es of the fins to maintain t e latter rigidly with respect to the drum, said last mentioned means comprising an adjusting screw carried by each bracket and engaging the rin 3. The combination with the, radiating drum of a hotair furnace, of a pluralit of brackets carried by the drum and exten ing radially therefrom, a sectional rin encircling the drum and confined wit the brackets adjacent the outer ends thereof a series of radiating fins arranged radially with respect to the drum, the inner edges of the fins engaging the drum, means for urging the ring inwardly against the outer edges of the fins to maintain the latter rigid- 1y with respect to the drum, and means on the lower'edge of the ring for supporting the fins in spaced relation with respect to each other.

4. The combination with the radiating drum of a hot air furnace; of a plurality of U-shaped brackets secured at their inner ends to the drum and extending radially therefrom, said brackets being arran ed at spaced intervals, a sectional ring encircling the drum and bein disposed within the U- shaped brackets a 'acent the closed outer end portionthereo an inwardly directed flange formed on the lower edge of each section of the sectional ring, upwardly extendin lugs formed on theflanges, and a plura ity of vertically radiating units arranged v radiall with respect to the drums, the outer ends 0 the units enga 'ng the inner face of the sectional ring and adapted to rest on said flanges, said lugs cooperating with the units to space the same with r ct to each other, and means carried by t e brackets for cooperation with the sectional ring to force the radiating units inwardly against the drum.

5. The combination with the radiatin drum of a hot air furnace; of a plurality o U-shaped brackets secured at their inner ends to the drum and extending radially therefrom, said brackets being arranged at s aced intervals, a sectional ring encircling t e drum and being disposed within the U- shaped bracket adjacent the closed outer end portion thereof an inwardly directed flange ormed on the lower edge of each section of the sectional ring, upwardly extending lugs 70 brackets carried by the drum and. exten ing formed on the flanges, and a plurality of vertically radiating units arranged radially with respect to the drums, the outer ends of the units enga 'ng the inner face of the sectional ring an adapted to rest on said flanges said ugs coo rating with the units to space the same wit respect to each other, means carried by the brackets for cooperation with the sectional ring to force the radiating units inwardly against the drum, said last mentioned means comprisin an adjustin screw threaded through the c osed sectional ring.

6. The combination with the radiatin drum of a hot air furnace, of a series .o vertical radiatin plates arranged greatly with respect to t e drum, each plate being formed with a slot in the outer end portion thereof, a-lug extending laterally from each plate for abutting engagement with the ad- 7. The combination with the radiating drum of a hot air furnace, of a series of vertical radiating plates arranged greatl with res ect to the drumyeach plate being orrned wit a slot in the outer end portion thereof, a lug extending laterally from each plate for abutting engagement with the adjacent plate to maintain the plate in spaced relaouter en of each bracket and engaging the tion with respect to each other, supporting means for the plates extending through the registering slots, said supporting means comprising a band, the lugs being arranged adjacent the inner sides of the slots, said band engagin said lugs to maintain the inner edges of t e plates against the drum.

In testimony whereof I afiix my signature.

' 'ELMERR. NEVEL. 

